US2545734A

US2545734A - Gardener's tool

Info

Publication number: US2545734A
Application number: US770387A
Authority: US
Inventors: Clarence T Holman
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-08-25
Filing date: 1947-08-25
Publication date: 1951-03-20
Anticipated expiration: 1968-03-20

Description

March 20, 1951 C, T,A HQLMAN 2,545,734

GARDNERS TOOL Filed Aug. 25, 1947 Patented Mar. 20, 1951 UNITED STATES PATENT OFFICE GARDENERS TOOL- v Clarence T. Holman, Glendale, Calif.

Application August 25, 1947, Serial No. 770,387

2 Claims. 1

The present invention relates to an improve gardeners tool.

An object of the present invention is to provide an improved gardeners tool especially useful in trimming hedges, bushes, trees and the like.

Another object of the present invention is to provide an improvedgardeners tool characterized by its simplicity and ease of-manufacture in accordance with present day mass production methods.

Still another object of the present invention is to provide an improved gardeners tool incorporating a cutting element which is moved into cooperating position in a new and improved manner.

Yet another object of the present invention is to provide an improved cutting tool comprising two blades in which relative movement of the blades is produced by the application of inertia forces to one of the blades.

Still another object of the present invention is to provide an improved tool useful in trimming hedges, bushes, trees and the like which may be fabricated from parts which are conveniently available on the present day market.

The features of the present invention which are believed to be novel are set forth withVY particularity in the appended claims. This invention itself, both as to its organization and manner of operation, together with further objects f and advantages thereof, may be best understood by reference to the following description taken in connection with the accompanying drawings in which:

Figure 1 is a view in side elevation of a gardeners tool embodying the present invention.

Figure 2 is a view in top elevation of the same.

Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 1.

The tool shown in the figures comprises a handle member Ill having stationarily mounted thereon a first cutting blade II which in turn has pivotally mounted thereon a second spring biased cutting blade I 2, blade I2 being Vpivotally mounted on the pin I3 and normally maintained in the position shown in Figure 1 by the torque spring I4. Torque spring I4 has one or its ends aiiixed to the pin I6 fastened to the blade element II and the other one of its ends anchored in aperture Il in blade I2 after being coiled around Vthe pivot pin I3 in prestressed condition.

The cutting edges 20 and 2l on members II and I2 respectively are the cutting edges of the instrument and are arranged for cooperation in the same manner as are the conventional 'spring biased together by the transverse forces sliding engagement. Thus, the torque spring I4 serves two functions-namely, to normally maintain the cutting element I2 in the position shown in Figure 1 and to bias the cutting edges 20, 2| together.

The handle member I 0 may -be secured in many different manners to the cutting element II and may, for example, be fastened thereto bythe same pins E3, I6 described above.

In operation of the tool shown in Figure 1, the cutting edge 2| is moved into cutting relationship with the cooperating cutting edge 2|)v upon the application of inertia forces to the member I2, which inertia forces are sufficient to overcome the forces exerted on the element I2 by the torque spring I 4. Such inertia forces may be applied by grasping the handle member I0 and snapping it very much like one snaps an elongated whip. In other words, if it is desired to cut twigs from trees or to trim hedges, the cutting elements I I and I2 are swung in an arc to a position wherein the undesired portions of the trees or hedges are disposed between the cutting edges 20, 2| after which the motion of the handle I0, blade I I, and pivot pin I3 is abruptly stopped in which oase the inertia forces acting on blade I2 cause it to move further against the action of torque spring I4 to produce relative movement between the cutting edges 20, ZI to thereby shear such undesired portions of the tree or hedges disposed therebetween. While the description of the action of the tool appears rather involved, the tool may be used by simply grasping the handle I0 and using a wrist action, which is easily developed.

While the particular embodiment of the present invention has been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from this invention in its broader aspects and, therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of this invention.

I claim:

1. In a cutting tool of the character described, a handle member, a first cutting element mounted on said handle member, a second cutting element pivotally mounted on said iirst cutting elementY and movable in response to inertia forces thereon, to form a pair of cutting shears therewith, a torque spring having one of its ends mounted stationarily with respect to the rst cutting element and the other one of its ends stationarily mounted with respect to the other cutting element, said torque spring having a coil portion arranged. to: press said cutting. elementsj in sliding engagement, said? second cutting element being moved to shear closing position against the action of said torque spring upon the application of inertia forces to said second cutting element.

2. In a tool of the character describedy a' rst cutting element, a handle memberfa-ixedqte said cutting element, a second cutting element pivotally and slidably mounted onl said first cutting element and movable in response to inertiafforces thereon to form a pair of shears, a pin pivotally connecting. saidriirst cuttingrelement and said second'cutting element, a torque` spring having on'eof itsends` anchoredV on* the'rst' cuttingY ele- REFERENCES CITED The following references are of record in the iile*l of*1 this patent:

UNITED STATES PATENTS Number Name Date 88,895 Murdock Apr. 13, 1869 235,416'V Davies Dec. 14, 1880 874,516 Low Dec, 24, 1907 11,007,836 Al1iso1r Nov. '7, 1911 1,186,235 Schrade June 6;, 19:16: